Means for the electric welding of can bodies



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J. BRENZINGER MEANS FOR THE AELJEIC'IRIG WELDING OF CAN BODES Filed July l, 1925 .4 Sheetsheet l Wap/M6 Ep G//VG Eos/N6 ATTORNEY March 27, 1928.a i,663,9"0

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ATTORNEY March 27, 192s. 1,663,910

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J. BRENzlNGx-:R

MEANS FOR THE ELECTRIC WELDING OF CAN BODIES Filed July 1. .1.925 4 Sheets-Sheet 4 IV' L lNvE-NTOR wymf ATTORNEY Patented Mar. 27, 1928.

UNITED STATES PATENT OFFICE.

JULIUS BRENZINGER,I OF FAIRFIELD, CONNECTICUT, ASSIGNOR TOvTHE MAX AMS MACHINE COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF NEW YORK.

Application filed J'uly 1, 1925.

rying out the invention of the aforesaid.

patent. v

In the accompanying drawings the invention is disclosed in a concrete and preferred form in which:

Fig. '1 is a plan view, largely diagrammatic, of one end of a body-forming machine` embodying my invention.

Fig. 1A is a plan view, largely diagrammatic. of the other end of a body-forming machine embodying the invention.

Fig. 1B is a planv view, largely diagrammatic, of a langing machine for Hanging the ends of can bodies and which may be associated with the body-forming machine. n

F'g. 2 is a side elevation, Vlargely diagrammatic, of Fig. 1. l

Fig. 2A is a side elevation, largely d1a`- grammatic, of Fig. 1^. I

Fig. 2 is a side elevation, largely d1agrammatic, of Fig. 1".

Fig. 3 is a letai1-- view of the welding means. y

Figs. 1*, 1", 121, 1, 1', 1s and 1Il are diagrammatic views illustrating the steps of the process.

Blanks of sheet material, like 10 of Fig. 1, are fed from a`\suitable source of supply 11 and are carried forward', preferably intermittently, by a conveyor, 12, of the character`usual1y provided in machines of `this kind;'and these blanks are first acted upon by notching device 13 that shapes each blank as indicated at, 14 in Fig. 1". 15 indicates an edging device that turnsover the edges 16, as shown in Fig. 1. .-17 indicate bodyforming members that fold the blank around a horn or support 18 into a body 19 shown in Fig. 1d with the edged portions of the blank interlocked and portions 1er-overlapping at the ends of the body. Adjacent the horn, or an extension thereof, is an electric welding device generally indicated by 20 that welds, at 21 shown in Fig. 1B, the overlapping portions 14. The body is now MEANS FOB THE ELECTRIC WELDING OF CAN BODIES.

Serial No. 40,731.

carried to the iuxing device 22 and flux applied. as indicated at 23 in Fig. 1f, after which the body is passed over soldering, device 24 and a line of solder is applied as indicated at. 25 in Fig. 1g. The body may now be removed and placed in the Hangin device 26 that acts to tiangefit as indicate in Fig. lh at 27. Sometimes. the body is soldered and not fianged and, at other times,

it is merely iianged and not soldered.

The various instrumentalities making up the machine. with the exception of the welding means. are all well-known and need not be described in detail. The welding means are, in the present instance, constructed as follows: adjacent the horn or support for the interior of the body, and over which it slides, is a transformer, the primary ofv which is composed of two coils 28. and the secondary of which comprises two terminal welding members 29. extending through coils 28 to engage one side of the exterior of the body on the support, and a third terminal welding member 30 connected to the other two and extending outside of the coils to engage the other side of the exterior of the body on the support. Member 30 terminates in a curved contact plate 31, when the body is round, to engage the body and between which and the horn the body slides. Members 29 carry, at their outer ends, rollers 32 so located as to engage the body at the oint where theelectric welds are desired. referably, there is a pivot connection at 33 between members 29 and 30 so that members 29 may be moved toward and away from the body on the support; and, to this end, a rod, as 34, actuated by a suitable cam or otherwise, is provided. The construction may be such that the coils are fast on members 29 and may be moved up and down therewith.

After the body has been formed by the body-forming members, itr is advanced beneath member 30, and in contact therewith, and members 29 now move upward into engagement with the body thereby we-lding the overlapping portions thereof. Members 29 then descend and the body is advanced to the next station and a new body comes into m transformer consistin posed of two coils en e secondary comprist vgz y 'i romero Bnected to the other two and extending' outside of the coils to engage the other side of the exterior of the body on the support.

2. An electric Welding device including: e support for the interior of a een body, a

of a primary corning two members extending through the coils to engage one side of the exterior of the body on the support and a third member connected to the 'other two and extending outside of the coils to engage the other side of the exterior' of the body on the support, :md means for moving the two members toward and awa from the body.

Signe at Bridgeport in the county of Fareld and State of Connecticut this 23rd doy of June, 1925.

JULIUS yBRENZ'ihTGliflR. 

